Welcome to FT mcowpat. I think you might have made a common new flyer mistake by flying first and then trying to collect the miles. Each major airline has a program that you must register with prior to flying. I know several airlines that will credit flights within the past 24 hours after you set up a frequent flyer account, but I doubt very many will give credit for retroactive flights beyond that time. You could set up frequent flyer accounts now and politely request recent flight credit by submitting boarding passes or other proof, but I doubt it will work. I sat next to a guy that told me his employer had him traveling every week for several months and that he thought the miles were being credited automatically. His boarding pass did not show a ff number, so I knew he was mistaken. Unless your frequent flyer number is showing on your boarding pass or other flight documents, you will not get credit. If you previously set up an account, you can get credit for prior flights by submitting the proof per each airline's policies. Good luck.